Alex2262
commented
8 months ago Sorry for the late response.
Altair is automatically built with an embedded network, solaris-net currently.
PGO was recently removed from Altair due to some issues in testing; however, by copying the makefile from a commit such as cc4154b706e6e74f4641bc260832b35c3c194a9d, you can build PGO with make by default.
The makefile in one of these commits with PGO:
# engine name
EXE = Altair
SOURCES := src/evaluation.cpp src/main.cpp src/move.cpp src/perft.cpp src/position.cpp src/search.cpp \
src/useful.cpp src/uci.cpp src/bench.cpp src/see.cpp src/bitboard.cpp src/move_ordering.cpp \
src/datagen.cpp src/nnue.cpp
CXXFLAGS := -O3 -std=c++20 -march=native -Wall -Wextra -pedantic -DNDEBUG -flto
CXX := clang++
SUFFIX :=
PGO := true
LLVM_PROF_CMD = llvm-profdata
ifeq ($(native),1)
CXXFLAGS += -march=native
ifeq (,$(shell where llvm-profdata))
override PGO := off
endif
endif
# Detect Windows
ifeq ($(OS), Windows_NT)
SUFFIX := .exe
CXXFLAGS += -static
CXXFLAGS += -fuse-ld=lld
else
DETECTED_OS := $(shell uname -s)
ifneq (,$(findstring clang,$(shell $(CXX) --version)))
ifneq ($(DETECTED_OS), Darwin)
CXXFLAGS += -fuse-ld=lld
ifeq (,$(shell which llvm-profdata))
override PGO := false
endif
else
LLVM_PROF_CMD = xcrun llvm-profdata
endif
else
override PGO := false
endif
CXXFLAGS += -pthread
endif
OUT := $(EXE)$(SUFFIX)
make:
ifeq ($(PGO), true)
$(CXX) $(CXXFLAGS) -fprofile-instr-generate -o $(OUT) $(SOURCES)
ifeq ($(OS), Windows_NT)
$(OUT) bench
else
./$(OUT) bench
endif
$(LLVM_PROF_CMD) merge -output="Altair.profdata" *.profraw
$(CXX) $(CXXFLAGS) -o $(OUT) $(SOURCES) -fprofile-instr-use="Altair.profdata"
rm "Altair.profdata"
rm *.profraw
else
$(CXX) $(CXXFLAGS) -o $(OUT) $(SOURCES)
endif
basic:
$(CXX) $(CXXFLAGS) -o $(OUT) $(SOURCES)
clean:
rm -rf *.o
How do I compile with an embedded network and with PGO build?